mas means more
menos means less
you can use them to compare two things or people eg. ciara es mas alta que alex. ciara is more taller than alex. always remember that mas+ the adjective+ que.
same for menos eg. ciara es menos inteligente que tu. ciara is less intelligent than you, menos+adjective+que
Answer:
this is Spanish section not math
Yo puse la carta dentro de uno de estos.
Hope this helps
:)
